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ASTM B596 Au-Cu vs. C22600 Bronze

ASTM B596 Au-Cu belongs to the otherwise unclassified metals classification, while C22600 bronze belongs to the copper alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM B596 Au-Cu and the bottom bar is C22600 bronze.

ASTM B596 Gold-Copper Electrical Contact AlloyUNS C22600 Jewelry Bronze
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 4.3 to 17
2.5 to 33
Poisson's Ratio 0.41
0.33
Shear Modulus, GPa 36
42
Shear Strength, MPa 280 to 360
220 to 320
Tensile Strength: Ultimate (UTS), MPa 450 to 620
330 to 570

Thermal Properties

Latent Heat of Fusion, J/g 77
200
Melting Completion (Liquidus), °C 1060
1040
Melting Onset (Solidus), °C 930
1000
Specific Heat Capacity, J/kg-K 150
390
Thermal Expansion, µm/m-K 14
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
40
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
42

Otherwise Unclassified Properties

Density, g/cm3 18
8.7

Common Calculations

Stiffness to Weight: Axial, points 3.1
7.2
Stiffness to Weight: Bending, points 8.5
19
Strength to Weight: Axial, points 6.8 to 9.4
11 to 18
Strength to Weight: Bending, points 7.1 to 8.8
12 to 18
Thermal Shock Resistance, points 22 to 30
11 to 19

Alloy Composition

Copper (Cu), % 9.0 to 11
86 to 89
Gold (Au), % 89 to 91
0
Iron (Fe), % 0
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Zinc (Zn), % 0
10.7 to 14
Residuals, % 0
0 to 0.2